Re: [Qemu-devel] sending pci information over the wire

[Anthony Liguori <anthony@codemonkey.ws>]

Glauber Costa wrote:
> Hi folks,
>
> I have some trial code here for a proposal, which I'd like to hear your
> opinions about (Well, I _had_, because I'm totally stupid and git reset'd --hard
> the wrong location, that happened to contain part of the code for it)
>
> Let me start by explaining what I'm trying to accomplish, and say that I myself
> am not sure this is the best approach, it is just a crazy idea that poped up.
>
> Right now, migration of pci devices work by a bit of luck. This is because the
> other side of the wire can enumerate the devices in a different order, causing
> them to end up at different addresses. Markus approach of pci_addr= patches
> do help that fact. 
>
> However, theoretically, there can be a case in which we:
>  * start receiving guest, with parameters determined by pci_addr=
>  * start live migration
>  * add a device.
>   

Once we have a machine config (and please, let's avoid the 2017 jokes 
please), I imagine that the machine config will be transferred as a 
non-live section.

That will solve this problem quite nicely.

Regards,

Anthony Liguori